Abrading device.



J an R. scoTT. ABRADING DEVICE. APIALIOATION FILED FEB. 11, 1907.

PATENT OETTCE.- y

JACOB SCOTT, or'XoRTH WEYMOUTH; MASSACHUSETTS, ASSIGNOR To UNITED SHOE MACHINERY COMPANY, or PATERSON, NEW JERSEY, A CORPORATION or NEW JERSEY,

ABRADING DEVICE.

Specification of Letters Patentm ?atented Oct. 15, 1907.

v Application filed February 11,1907. Serial No. 366,920.

To all 'whom it Imay' concern: l Be it known that l, JACOB Pt. SCOTT, a citizen of the United States, residing at North Weymouth, in the 4 county of Noriolk and Commonwealth of Massachu- 5 setts, have invented certain Improvements in Abrading Devices, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings -iindicating like parts in the several figures. p

This invention relates to abradi'ng deviceaand more particularly 'to movable devices constructed to sustain in AWorking position covers of iexible abrading mate# rial.

The invention is herein shown embodied in a rotary abr'ading device of the type in which a support for the cover, having a curved supporting surface concentric with the ais ofthe device, is divided longitudinallyl into two sections arranged' for. relative movement transverse to the axis and providediwith longitudinally4 arranged meeting clamping surfaces extending inwardly i from the periphery of the devices. Asis Well-known,

` in applying a cover to a device of th'is type' the cover v isjvrapped circumierentially about the support, its

two ends being arranged between the clamping sur-4 l faces, aIidthe sections `are' then forced together and held in closed position by suitable mechanism. In the practical use of devicesof this class, for example in their use as bufiingrolls in the 4 manufacture rofboots and shoes or in other arts, considerable diiculty has 3'0 lbeen experienced in securely retaining in place an abrading hover. The reaction of the workupon the cover has a tendency to'withdraw the ends of the cover from between the clamping surfaces of the roll sections,4 andthe cover thus gradually becomes loose. lNot only is the life of the cover thereby shortened'andfa waste of time and material thus' occasioned, but also the defective condition'of they roll detracts more or less from the quality of the work which isperiormed,ilandat times causes it to be seriously impaired. 40 The primary object of the present invention is so to improve devices' of the class described as to obviatev the objectionableresult above referred to.4

l To thisgbend an important feature of the invention consists in the provision, ina rotary abrading'device formed of a plurality oi longitudinal sections between which the ends of a cover are held, of means for gripL lping said ends and holding them'frictionally from outward movement, by enga-gement with both'sideso each end ofthe cover.

In pr-ior devices of this type covers of abrading material, such as'sandpaper or the like, .the clamping surfaces-'of the sections en ge the smooth,or inner side oi the cover and do not come in contact with the rough or outer side of thetwo ends-of 5.5 lthe cover.4 There is, consequently, little rictional re scribed and defined in the claims.A

for-'supporting exblesistance to withdrawal oi the ends oi the cover from between the sections. According to the`present invention, the arrangement is such that in the closed position of the parts the ends'of the abrading material are gripped between surfaces which engage not only thezsmooth side oi the material but also its'rough side Y so that the ends arb efiectually held from outward movement. I l

The arrangement herein disclosed-for securing a cover in itsworking position comprises an intermediate member adapted to be interposed between the clamping surfaces of the sections and between the ends of the cover. This member is arranged for free movement in approximately the line of relative movement of the sections, so

that when the sections are forced together said member is brought in Close relation to their clamping surfaces and .in close engagement with the rough side of each end oi the cover. Said member is held from outward movement from between the sections, and by its engagement Iwith the ends of the cover holds said ends securely from outward movement. The intermediate member is preferably formed of vf iexible non-elastic material so that it will have even contact with the cover', butthe inventionI is'obviously not limited 'to use o suchmaterial. Said member is made thin, so that it will not prevent the clamping faces'o the sections from being brought into close relation. I have shown herein an intermediate flexible member'supportedin two different-Ways, and it will be obvious that other arrangements oi the parts lying Within. the scope' of the present invention mayI be made. ln one ior'm oi the device herein described a strip of exible material is mounted upon one of the roll sections, being secured to its clamping ace by suitable fastenings adjacent-to the inner. side oi said clamping face. In another device herein shown,the intermediate member is sustained independently o the roll, it being supported by a holder mounted upon the shaft' carrying said roll.

i Other features of the invention will be hereinafter de- In the .lrawi1igs,-Figure l is a view in perspective oi.

ma hurling roll embodying my invention in one o itsV forms; Fig. 2 is a transverse sectional view oi the parte in lin their closed position, Fig. 3 is a. view in perspective o a holder which may be employed to support a strip of fiexible material between the roll sections, and Fig. 4 is a transverse sectional vview ofv a roll provided 4with the holder of Fig. 3, showing the parts in their closed position.

j Referring to the 4drawings, thenreerence vnumeral 1 ros.- l.indicates a Shaitarrangedor rotation in 'any conven` i 'ient manner. A section 2 oi a buiing roll 'is shown mounted 'upon'the shaft l. said section being secured inf' fixed position upon` said shaft by any suitable-means. A secondisection 4 is arranged for movement. with'relation to the shaft 1 and the section 2, and is adapted to ferm. in conjunction with the s ec tion 4in the closed position ofthe parts, a cylindrical support ior'a'cover of sand paper or similar material. v The outer surface of 5 .the sections is formed by a layer oi felt 5, as is common in rolls of lthis type, the inner portion of each roll section being formed of Wood. The section 4 is hinged to the section 2 at the periphery of the wooden core of the roll,

roll, and each cam is provided with a curved slot 8 which cooperates with pins 10 carried by the movable section of the roll to hold the parts in their closed position; It wil-l be understood that in the use of rolls of this type the meeting faces of the sections upon the side opposite to the hinges 'constitute clamping surfaces between which-the two ends of a cover are heldY said cover being formed of a continuous'strip of material provided with an abrading surface upon its outer side. Each of 2/0/ said clamping surfaces is provided with a plurality of l outwardly projecting pinsll, which are of advantage in facilitating the application oi a cover to the roll and have been heretofore required for the purpose of holdf "ing the ends of the cover from outward movement from between the roll sections in their closed position.

In the arrangement of parts shown in Fig. 1, a thin strip l2 of flexiblemon-elastic material, such as canvas, leather, or the like, is secured to the clamping surfacelof the fixed roll section 2, at its inner edge, said strip extending preferably the entire length of the clamping surface and being .unsecured to the roll at its sides and o uter edge. This intermediate strip of material pre-ferably is of such a width as to extend approximately to the periphery of. the roll in its Working position, and is provided with perforations to receive the pins l1.

11n the construction shown in Figs. 3 and 4, a holder `14 of tubular form is arranged within the roll aboutI the shaft l. A longitudinal strip 16 oi flexible material secured at its inner edge to the holder 14 in any suitable way. As will appear from Fig. 4in the operative position oi the parts the strip 16 is held by the holder 14 from outward movement from between the roll sections. It will be seen also that, in the open position of the roll the strip 16 and holder 14 are ar- *5 ranged forfree movement about the shaft 1.

In the use of the constructions shown and described, one end of a cover of suitable dimensions is forced 'upon the pins of the vfixed section 2 oi the roll, said ends being interposed between the intermediate strip of flexible material and the clamping surface of said roll section. The cover is then wrapped circumferentially about the sections and its other end forced upon the pins of the movable section 4 and between the clamping face of said section and the intermediate member. The sections now being -forced together, the cover is stretched tightly upon the roll and its ends are brought in close engagement. with opposite sides of the intermediate strip of fiexible material. It Will be seen that, on account of its flexible nature,

- the intermediate member is brought into close contact with the rough faces of the ends oi the cover throughout the entire area of the portion having contact with the cover. 1n the closed position of the roll, the intermediate member is gripped by the rough ggsides of lthe ends of the cover and as said ,member is A cam 6 is arranged upon the shaft 1 at`each end of the ated since the ends of the cover may be gripped over held from movement radially of the roll, the ends of the cover are securely held from outward movement. Since the intermediate member is thin, it allows the clamping faces of the sections and consequently the adjacent faces of the cover'to be brought into close relation, as will appear from Figs. 2 and 4.

The use of the holder shown in Figs. 3 und 4 is ad vantageous in that it allows the ends of the cover to be conveniently placed in position between the clamping surfaces of the roll sections. It will be seen that in the use of this holder, the intermediate strip of flexible material may be moved out of proximit) to each clamping surface while the-cover is being placed in position upon the pins projecting ironi said surface. It will be also observed that in the use of this arrangement, the ends of the'cover may project further inwardly toward the axis of the roll 4than is possible in the use of the construction shown in Figs. l and 2. l l

While in the constructions herein illustrated I have shown pins projecting from Atho clamping surfaces of the sections, it will be understood that their purpose is to facilitate application of the cover, and that they are `not required for the purpose of preventing outward movement of the ends of the cover in the use of the roll. In prior devices, an important function oi the pins has been to retain the cover in' Working position during the use of the roll. They have been ineffective for this purpose, however, as the ends of the cover frequently have been gradually torn from the pins 95 by the peripheral pull of the work. In the use of devices embodying the present invention, any liability of the cover ends being torn in this way is efiectually obvia considerable area. It will be understood that the frictional resistance to relative movement between said ends and the gripping means in the closed position oi the roll is so great as to preclude such movement. not only because both sides of each end of the cover are engaged by the gripping means, and the area of rc- 195 tional contact thus doubled, but also because said means has engagement with the abrasive side of the cover which, as will be obvious, is of such a rough character as to offer considerable resistance to relative movement between the cov'er and the gripping 110 surfaces.A

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United 1. A movable device for sustuinlng in working position :1 cover of abradlug material having ln combination n plurality of longitudinal sections arranged to receive the ends .of the cover between them, and means for holding suld ends frictionully from outward movement by engagement with opposite sides of each end of the cover.

2` A movable device for sustainingr ln working position a cover provided with'an abrading surface upon one of lts sides. having in combination, :i plurality of longitudinal sections arranged to receive between them the ends oi tbc cover. und means for holding; sud ends frictionally from outward movement by engagement with the rough side of each en dof the'cover.

Il. A rotar-,v device for sustaining; in working position a cover o1' abrndlng' material bovine" n combination u plur-.ility oi' relatively movable longitudinal sections construct ed to form in their closed position a curved cover-supporting surface und provdedwlth longitudinal clumplni.;l surfaces arranged to receive between them the two ends of the cover, means for holding said sections 'inclosed position and an intermediate member interposed between said' clamping surfaces and arranged to lie between the ends of the cover, said member being leld from outward movement -from between the sections. f

4. A movable abrading device having in combination aplurality of longitudinal sections arranged for relative movement transverse, to the axis of the device, and provided with longitudinal clamping surfaces arranged to receive between them the two ends of a cover and an inten mediate 'member interposed between 7said clamping vfaces arranged for free movement in approximately the line of relativel movement of said faces and held from outwardmovement from between the sections.

5. VAv rotary device for sustaining in workingr position a cover of abrading material, having in combination, a plul rality of relatively movable longitudinal sections provided with longitudinaliclamping surfaces arranged to receive between them the two ends'of a cover, means for retaining said sections in closed position and an intermediate member of exible, non-elastic material interposed between the clamping faces of the sections and arranged to .lie between the -ends of the cover, said member being/held from outward movement frombetween the sections. v 6. A rotary device for sustaining in working position-a cover of abrading'material, having in combination, a pIu-.

rality of relatively movable longitudinalA sections construc-ted to Vform in-their closed position a curved ysupportreceive between them the two ends of the-cover, means for retaining said sections 'in closed position and an intermediate Vmember supported independently of said sections be-` tween their clamping faces and arranged' to lie between the ends of the cover, said member being held from outward' movement from between thesections.`

In testimony whereof I have signed'mv name to 'this specification lin thejresence of two subscribing Witnesses. .Tacos R. sco'r'ip.4 Witnesses: A

I BERNARD BAnnows,

H. DoBsnY SPnNcnu.` 

